First she had to find a way to mass­produce the plants—a tough task, since bamboo flowers create seed only once every 50 to 100 years. And dividing a bamboo plant frequently kills it.

　　Heinricher appealed to Randy Burr, a tissue culture expert, to help her.“People kept telling us we'd never figure it out，” says Heinricher.“Others had worked on it for 27 years! I believed in what we were doing, though, so I just kept going.”

　　She was right to feel a sense of urgency. Bamboo forests are being rapidly used up, and a United Nations report showed that even though bamboo is highly renewable,_as many as half of the world's species are threatened with dying out.Heinricher knew that bamboo could make a significant impact on carbon emissions(排放)and world economies, but only if huge numbers could be produced. And that's just what she and Burr figured out after nine years of experiments—a way to grow millions of plants. By placing cuttings in test tubes with salts, vitamins, plant hormones, and seaweed gel, they got the plants to grow and then raised them in soil in greenhouses.

　　Not long after it, Burr's lab hit financial difficulties. Heinricher had no experience running a tissue culture operation, but she wasn't prepared to quit. So she bought the lab.

　　Today Heinricher heads up a profitable multimillion­dollar company, working on species from all over the world and selling them to wholesalers(批发商). “If you want to farm bamboo, it's hard to do without the young plants, and that's what we have，” she says proudly.

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